import java.io.Console;

public class Example8_21 {

   public static void main(String args[]) {

      boolean success=false;

      int count=0;

      Console cons;

      char[] passwd;

      cons = System.console();

      while(true) {

         System.out.print("输入密码:");

         passwd=cons.readPassword(); 

         count++;

         String password=new String(passwd); 

         if (password.equals("I love this game")) {

            success=true;

             System.out.println("第"+count+"次密码正确!");

            break;

         }

         else {

             System.out.println("第"+count+"次密码"+password+"不正确");

         }

         if(count==3) {

            System.out.println("您"+count+"次输入的密码都不正确");

            System.exit(0); 

         } 

      }

      if(success) {

          System.out.println("你好，欢迎你!");

      }

   }

}
